[Q] T-Mobile/AT&T/GSM on Razr M

sy0120

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Feb 4, 2012
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P3Droid has successfully gotten the RAZR M to run on AT&T. But my question is this: If I have a 3G ATT sim, will it work? Has P3 released the how to yet? I know i'm being impatient but I really need it because I urgently need to use this on ATT since my 'Backup' phone has just reached the end of life.

Thanks to all Devs involved!
 

wintermute000

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Jul 13, 2010
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P3Droid has successfully gotten the RAZR M to run on AT&T. But my question is this: If I have a 3G ATT sim, will it work? Has P3 released the how to yet? I know i'm being impatient but I really need it because I urgently need to use this on ATT since my 'Backup' phone has just reached the end of life.

Thanks to all Devs involved!
TBH you're better off with a Razr I (which is same handset with 3G GSM only, and intel proc - don't worry about benchies, anand has confirmed it runs great w/ actually better battery life than S4).

The Verizon Razr M won't work with AT&T 4G, so Razr I is equivalent basically, + is fully unlockable bootloader, + better battery life, + cheaper, = win
 

sy0120

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Feb 4, 2012
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TBH you're better off with a Razr I (which is same handset with 3G GSM only, and intel proc - don't worry about benchies, anand has confirmed it runs great w/ actually better battery life than S4).

I already bought the developer edition of the razr m and all I need to do is wait for p3droid 2 release instructions.
 

cellzealot

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Jan 4, 2008
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wintermute000 posted the Aussie radio image in the fast boot thread.

http://dl.dropbox.com/u/8648738/NON-HLOS.bin

All that is needed is to flash that in fast boot with the following command: fastboot flash modem NON-HLOS.bin

Then insert the SIM and reboot and it should just work. You may need to select GSM/UMTS in Mobile Networks settings. The APN is set automatically by the SIM and the apns-config.XML by default has the necessary APNs included for ATT and T-Mobile.

We intend to post a more complete tutorial but are trying to understand more about how it works and what doesn't work under the AU radio.

P3Droid has VZW 4g data and CDMA1X voice but no 3g data. I have no service at all with VZW SIM because I am in a 3g only area.
It appears to break eHRPD authentication probably because that is not used on Australian networks and is a very problematic part of how VZW's network is deployed.

When we get it figured out a little better we will post more information.

Right now it's pretty straightforward. You use the AU radio for GSM/UMTS service but must flash back to the VZW radio for normal CDMA/LTE/EVDO service.
 
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aslomagic

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Nov 10, 2012
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wintermute000 posted the Aussie radio image in the fast boot thread.

http://dl.dropbox.com/u/8648738/NON-HLOS.bin

All that is needed is to flash that in fast boot with the following command: fastboot flash modem NON-HLOS.bin

Then insert the SIM and reboot and it should just work. You may need to select GSM/UMTS in Mobile Networks settings. The APN is set automatically by the SIM and the apns-config.XML by default has the necessary APNs included for ATT and T-Mobile.

We intend to post a more complete tutorial but are trying to understand more about how it works and what doesn't work under the AU radio.

P3Droid has VZW 4g data and CDMA1X voice but no 3g data. I have no service at all with VZW SIM because I am in a 3g only area.
It appears to break eHRPD authentication probably because that is not used on Australian networks and is a very problematic part of how VZW's network is deployed.

When we get it figured out a little better we will post more information.

Right now it's pretty straightforward. You use the AU radio for GSM/UMTS service but must flash back to the VZW radio for normal CDMA/LTE/EVDO service.
This is GREAT! I've been waiting for something like this, and I've been following the progress ... see also my post here: http://forum.xda-developers.com/showthread.php?t=1973156&page=2 post #13
Just FYI, wintermute000 posted two images for the radio, one was zipped and dumped from mmcblk0p1, and the other is the one you linked to. I downloaded both and checked the MD5, they are the same.

Well, I think this is it, I'll get this phone, flash the radio, put my t-mobile sim in it, and cross my fingers ... :)
The only problem left is, how to get rid of the verizon logo without ruining the phone :D
 

sy0120

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Feb 4, 2012
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I'm so mad that the aussie radio isn't compatible with my ATT card, can't connect to 2G, 3G, or 4G on ATT or TMO frequencies. Do I have to have the sim card out of the phone when I flash the radio cuz i left it in.
 

freak4dell

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Aug 10, 2008
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I'm so mad that the aussie radio isn't compatible with my ATT card, can't connect to 2G, 3G, or 4G on ATT or TMO frequencies. Do I have to have the sim card out of the phone when I flash the radio cuz i left it in.
Dev Edition or retail?

Is voice working?

Did you go into settings and make sure the radio is set to GSM or WCDMA? Are you sure the APN is correct, or even there at all?
 

sy0120

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Feb 4, 2012
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Dev Edition or retail?

Is voice working?

Did you go into settings and make sure the radio is set to GSM or WCDMA? Are you sure the APN is correct, or even there at all?
Lol I have dev edition. Thanks for the reply. I have no idea with the APN and what it is. Can you please explain? Thanks
 

sy0120

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Feb 4, 2012
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Lol I have dev edition. Thanks for the reply. I have no idea with the APN and what it is. Can you please explain? Thanks
I researched APN a little bit.

When I type this into a new APN:

Name: StraightTalk ATT
APN: att.mvno
Proxy: Not set
Port: Not set
Username: Not set
Password: Not set
Server: Not set
MMSC: http://mmsc.cingular.com
MMSC proxy: 66.209.11.33
MMS port: 80
MCC: 310
MNC: 410
Authentication Type: Not set
APN type: default,supl,mms
APN protocol: IPv4
APN enable/disable: APN enabled (tick mark checked but grayed out anyways)
Bearer: Unspecified

I then press 'save' and it won't save the apn. Its as if the phone knows that its a Straight Talk APN and won't let it save. However, if i put random letters in each of the boxes, it lets me saves the APN. Any ideas as to why? Also which APN setting will work with the Aussie Radios?
 
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sy0120

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Feb 4, 2012
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Well, it doesn't look like you're supposed to be leaving the Proxy and Port blank.

http://www.straighttalksim.com/support.php

http://forum.xda-developers.com/showthread.php?t=1856574
Do you have any other APN I can use other than straight talk? I have a 4G ATT card inserted in my Dev Razr M. I can't connect at all to any service when i search and i already flashed the aussie radio

Edit: I see that my MNC and MCC codes have to be the same as found on the sim card otherwise the APN won't save. How do I know what those codes are for ATT 4g?
 
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sy0120

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Feb 4, 2012
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You can Google for the AT&T and T-Mobile ones, but it won't help you any to put a different carrier's APN in. If you're on Straight Talk, you need to be using Straight Talk's APN.
Thanks for your help, I truly appreciate it. I'm not on Straight Talk. So I guess I have to look up the APN values for ATT 4G. But is it even possible for me to get anything from 2G or better running on the Aussie radios. Like does the radio support those frequencies?
 
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freak4dell

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Aug 10, 2008
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Thanks for your help, I truly appreciate it. I'm not on Straight Talk. So I guess I have to look up the APN values for ATT 4G. But is it even possible for me to get anything from 2G or better running on the Aussie radios. Like does the radio support those frequencies?
Yes, the radio supports those frequencies. If it flashed correctly, and the correct APN is used, it will work.
 
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sy0120

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Feb 4, 2012
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After I do the command 'fastboot flash modem NON-HLOS.bin' and it says something along the lines of Sending modem...OKAY and Writing modem....OKAY 30 Seconds Finished......it must've worked then. But at reboot it still says sim is from invalid source so I've narrowed the problem donw to the APN settings.
 

rancur3p1c

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Jan 2, 2011
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After I do the command 'fastboot flash modem NON-HLOS.bin' and it says something along the lines of Sending modem...OKAY and Writing modem....OKAY 30 Seconds Finished......it must've worked then. But at reboot it still says sim is from invalid source so I've narrowed the problem donw to the APN settings.
I hear invalid SIM source is from the stock ROM. It is probably to annoy you and keep you on Verizon.